Ratchet mechanism



Nov. 29, 193.8.l F. B. SEEBERGER 2,138,045

RATCHET MECHANI SM Filed July s, 1956 2 sheets-sheet 1 lNV-ENTOR Nov. 29, 1938.

F. B. SEEBERGER RATCHET MEGHANI SM Filed uly 6, 193.6 2 Sheets-Sheet 2 INVENToR Patented Nov. 29, 1938 UNITED STATES PATENT yOFFICE RATCHE-T MECHANISM Application July 6, 1936, serial No. 88,97'0` 8 Claims.

This invention relates to apparatus of the type generally known as calking or grease guns, and comprises a structure or frame of skeleton type having a pistol-grip stock, particularly designed 5 for use with a cylindrical cartridge or container in which various types of putty and calking material, paints, etc., or grease or other oleaginous material may be packed for shipment; such container or cartridge being adapted to be -mounted l in the skeleton frame, and manually operated coacting mechanism carried by the skeleton frame whereby the contents of such container or cartridge may be discharged through a suitable nozzle in a controlled manner.

l The general construction of the skeleton frame forming part of the structure of the present invention is substantially the same as that shown and described in my application, led July 15, 1933, Serial No. 680,539, (now Patent No.

2o 2,090,644, dated August 24, 1937).

One object of the present invention is to provide improved means, manually operated, for effecting discharge of the contents of a prelled cartridge or container.

25 A further object of the invention is to provide simple and readily operable means for resetting the mechanism employed to eiect discharge of such cartridge or container.

And a further object of the invention is to pro- 30 vide an improved form of container having an end wall with a central aperture; said aperture being closed by suitable means for transport and having a flange adapted to enter an annular recess in a nozzle-carrying member of the calk- 35 ing gun structure and form sealing engagement therewith.

These and other features of the invention are more fully described hereinafter; reference being had to the accompanying drawings, in which:

40 Figure 1 is a view representing a side elevation of calking apparatus within the scope oi the present invention.

Fig. 2 is a longitudinal sectional view of the structure shown in Fig. l.

45 Fig. 3 is an end view.

Fig. 4 is a fragmentary sectional view of a part of the structure illustrated in Fig. 2; showing parts of the mechanism in a different position.

50 Figs. 5 and 6 are similar views, illustrating parts of the mechanism in other positions.

Fig. 7 is a sectional view on the line VII-VII, Fig. 2.

Fig. 8 is a perspective lview illustrating a de- 55 tail of the invention, and

(Cl. 'I4-148)' Fig. 9 is a fragmentary sectional view illustrating another detail of the invention, taken on the line-IX-IX, Fig. 2.' V

The extruding apparatus forming the subject of this invention comprises a skeleton frame including a body portion having a pistol grip stock or handle and a forwardly projecting member constituting a support for a pivotally mounted seat for the discharge end of a cartridge containing the material to be discharged; such stock 10 also carrying a cupped receptacle or seat receiving the rear end of said tubular cartridge or container. In order that such cartridge or container may be properly positioned and operatively held in the skeleton frame, one of the seats is iixed to the body oi the same, while the opposite seat, which is centrally apertured, is pivotally mounted at the end of the forwardly projecting supporting member and is movable with respect thereto on such pivotal connection to permit insertion and removal of a' cartridge or container.

A locking bar carried by the body portion o-f the frame extends over the container or cartridge substantially parallel with respect to the forwardly projecting supporting member, and such locking bar has a hook at its end which engages and holds the pivotally mounted seat in position against one end of the cartridge or container; such action iirmly clamping the opposite end of such container or cartridge in the Xed seat.

The tubular cartridge or container for use with my improved calking gun is indicated at A, and carries at one end a movable wall B, which may serve as a piston to force the contents of the same out through its opposite and apertured end and through the registering aperture in the movably mounted seat, under the action of a pistonimpelling member carried by the skeleton frame. 'I'his piston-impelling member includes a plate carried at the end of a toothed rod which passes 40 through the fixed seat, and the handle portion of the skeleton frame is provided with a trigger member operatively associated with means in engagement with said toothed rod whereby the latter may be moved to cause the piston-impelling member to act upon the piston within the container to discharge its contents.

The skeleton frame or support for the tubular container or cartridge includes a portion which may be termed the stock, constructed of two pieces of sections I, l, which may be of pressed metal of the same size and shape but of right and left contour, and these sections may be riveted, as indicated at la, or otherwise secured together.

The stock has a pistol grip or handle 2, and at its inner end and substantially directly above this pistol grip a flanged disk 3 is mounted; such disk constituting xed seat for one end of the tubular cartridge A, such as that illustrated in Figs. l and 2; lled with fluent material to be discharged by pressure applied to the movable piston member B within such cartridge.

The disk .3 constituting the fixed .seat or receptacle Ifor the cartridge is circular in contour and may be of pressed metal. It may be secured to the sections I, I, of the frame by means of lugs 4 carried by the latter, which. pass through open ings in said seat or receptacle and are riveted or upset over the inner surface of the same. The ilange 3a of the seat 3 may be tapered so that the end of the container or cartridge A may readily enter the same when the container is locked in position.

At the opposite end of the skeleton frame, a combined nozzle and flanged seat receiving the apertured .end of :the ycontainer or cartridge is mounted; suchseat being indicated .at 5 andhaving a depending lug or hingedmemberia which is pivotally connected to the forwardly projecting portion S of the frame 'by means of a pin or rivet-.6a. 'Thisseat Eis centrallyapertured, as indicatedat 5b, and .it has an annular :recess `5c for engagement by Va flange a, at the end A of the container A, to ,insure va tight joint and avoid leakage `of the ,contents during extrusion.

A'locking bar tohold the movableseat5 against the apertured end Aof the cartridge-or container is indicatedfat l8, :and this :bar passes through a wall `Ib .of the .headof the structure and .is provided y.with -a vhooked .end 8a which engages the seat .5; the .latter having a slight depression 5d receiving saidihookedfend. The bar is guided by ears .3e and .15 .carried lby the seats 3 and 5, `respectively, and is connected `at its end adjacent to vthe wall Ib :to a `pivotally mounted cam 9 which, :when turned into engagement with the wall lb, as indicated in vFig.i2, eiects apull on-said bar .8 whereby its ihooked end `8a rmly holds -the pivotal seat 5 in .engagement with the cartridge or container.

The cartridge or container Vfor `the calking materialmay lbein the 4formo'f aitube of cellulosic material; cardboard and the like, or I may employ a'metal tube, thedischargeendthereof having an outwardly :extending anged aperture capable Aof engaging an annular `seat in the cartridge Vreceptacle .at the nozzle end of 'the same. In either insta-nce, the calking material may be placedin the container or in a separate shell orenvelope of paper, Cellophane, or the like, .placed ,in the container and which may be collapsed vby the piston means as the calkingmaterial is extruded throughthe end of the cartridge or container and the nozzle I0 carried by the seat 5. .Any suitable `form of nozzlemay b-e used.

A toothed rod I I, which may be square, passes through :an .opening 3 in the fixed seat 3, and carries a -vpiston-impelling member 4or plate .'I Ia adapted to engage the piston B in the container or cartridge; -the opposite andfree end ofthe toothed rod being provided with a cross-piece 1I Ilo which serves as a stop when the piston means reaches the limit of its outward movement within the cartridge'or-container, and also for retracting the toothed rod to starting position when a cartridge or container has been emptied and it is desired to -insert a `fresh one. `In order that the piston means, including the impelling member -I In, carried by the toothed -rod iI and arranged to act upon `the piston member B -withinthe cartridge or container may be operated, and the following mechanism may be employed:

The square toothed rod I I, extends through the head of the calking gun structure and is impelld forward by the movement of a toothed power-applying member or power shoe I2, engaging teeth I Ic on said rod II. This power-applying member I2 is -operatively connected to Ya trigger lever I3, pivoted at 13a iin the head of :the structure, by toggle mechanism including the several links I4, I5 and I6; the link I4 being pivotally connected at one end, at I4a, to the trigger lever I3; the opposite end being connected at Mb to the links AI5 and I 6. The opposite end of the link I5 is pivotally mounted, Vas at I51, in the head, while the opposite end ,of the link I5 is pivotally connected at I 6a to the power-applying member I2.

Thetrigger lever I3 is held outwardly in the position shown by means of a spring I'I, suitably supported and having legs I'Ie and I'Ib, which engage the trigger lever I3 .and the handle v2, 'respectively.

.The toothed power-applying member or 'power shoe 'lies normally a slight distance .above the toothed rod II,as indicated in Fig. 2, but not out of actual engagement therewith. `When the trigger lever I3 is compressed against the handle y.2, in the manner indicated in Fig. 4, the powerapplying member I2 is pressed into full .engagement with the teeth of the rod I I and moved {forward by the toggle mechanism one or more teeth at a time. When the -trigger lever is released .and the vtoggle links return to theirinactive position. the power-applying rmember may rise sufficiently to' clear the teeth and retract for fresh -engagement therewith.

.To prevent retractive movementfof the toothed rod I I at this time, a detent I8 is provided, mounted in advance of the power-applyingmember12;; such detent being held in engagement with 'the toothed rod II by a spring I9, one end of which also overlies the power-applying member d2, and this detent is mounted in a-pair of-verticallymovable cam members 20, more :clearly-shown vin Fig. 8, which members are arranged in the ihead :of the structure just behind the lhanged disk .3 which forms a seat for `end -of 4the movable cartridge A containing the calking material. These cam members 20 havetheir sides slottedfat 2|]et for the reception of side wings fI'Bafof the detent I8 and, in addition, they have guide slots 2.0b near their lower ends permitting vertical movement with lrespect .to .one of v,the rivets, indicated at '2| which holds the walls .I, .I, of the head together. These members 29 also have .rearwardly projecting portions 2lic which underlie projections 22-one on .each sidecarried by lthe power-applying ,member I2, in .axial alignment ywithithe pivotal connection with ithe toggle :link I5. The detent I8 has -forwardly and rearwardly-.arranged portions I8b which lie .between .the `spaced cam members 20, and its bottom portion is provided with teeth which ,engage the 'teeth I -Ib of .the rod I I. The power-applyingmember .orshoe t2 has a rearwardly disposed tongue-or extension I2 overlying vthetoothed rod =I.I which helps v.to keep it in proper positionduring tsvoperation by the toggle mechanism,.as-well as whenit is released from the toothed rod.

rAlever '25, which visemployed to .release-the detent and power-applying member ifrom `the toothed .rod II by raising the cam :members :20; one end underlying said members, is pivotally mounted -at vv2 5a Vand lhas a 4thumb-.engaging .piece 25b in a convenient position .with .respect toithe 75v handle 2, When this thumb piece is depressed, the lever 25 first raises the cam members 2U and through them the power-applying member I2, and subsequently the detent I8, in the manner indicated in Figs. 5 and 6 permitting retraction of the toothed rod Il, after which the empty cartridge may be removed and a fresh cartridge inserted in the gun.

The power shoe mechanism and detent are so designed that, when actuated by the release lever, the power shoe is first disengaged; the slots 2l)a in the sides of the cam members 20 being long enough to permit the rearwardly extending portions 2|)e to lift the power shoe before tle bottom of the slots 20*EL engage the detent. It is essentially a delayed action or dwell. Should the detent release first, the back pressure on the rod would cause the toggle -to raise and jam so that it would be impossible to release the power shoe.

The cartridge may be provided with a suitable slip cover over the end in which the piston member B is placed, and the opening surrounded by the flange a at the opposite end may be closed by a suitable cap or cover. Both cap and cover are removed before the cartridge is placed in the gun. To load the structure after the piston impeller has been retracted to a point adjacent to the seat 3, the cartridge with both ends open is placed in the frame with the end containing the piston member B fitting within the fixed seat 3. Then the seat 5 is closed upon the opposite end of the cartridge or container, and the locking bar 8 brought into position whereby its hooked end 8a may engage such seat 5, after which action such bar is locked in position by turning the cam 9 to the position shown in Fig. 2. The position of the flange a. at the end of the cartridge or container in its engagement with the annular recess 5c of the seat 5 protects the latter from receiving any of the contents; thereby insuring proper delivery to the nozzle I0. The nozzle may have various forms of outlets, one of which is shown in Figs. 1 and 2.

In View of the fact that many compounds available for extrusion by the use of a structure of this type have a great amount of elasticity, it is desirable, when a determined part of a calking or other operation has been completed, that the back pressure upon the contained material be relieved, and this may be effected by actuating the detent releasing lever 25 for partial or full relief of the back pressure regardless of the position of the trigger at the time such detent release is actuated.

From the foregoing description, it will be apparent that simple and eiiicient means are provided for accomplishing the objects of the invention, and while the elements shown and described arewell adapted to serve the purposes for which they are intended, it is t0 be understood that the invention is not limited to the precise constructions set forth, but includes within its scope such changes and modifications as may be made within the terms of the appended claims.

I claim:

1. The combination with a frame support and a toothed rod mounted for longitudinal movement with respect to said frame support, of a toothed power-applying member in operative engagement with said toothed rodI and longitudinally movable with respect to the same, a plurality of toggle links pivotally connected at a common point; one of said links being connected to the power-applying member, a second having connection with actuating means therefor and a third pivotally anchored in said frame support, and a trigger pivotally mounted in said frame support for operating said toggle links.

2. The combination with a skeleton frame support of a toothed rod supported by said frame and longitudinally movable therein, a toothed powerapplying member in operative engagement With said toothed rod and longitudinally movable with respect to the same, a plurality of toggle links pivotally connected at a common point; one of said links being connected to the power-applying member, a second having connection with actuating means therefor and a third pivotally anchored in said frame support, a trigger pivotally mounted in the frame support for operating said links, and means for disengaging the power member from the toothed rod.

3. The combination with a'skeleton frame support of a toothed rod supported by said frame and longitudinally movable therein, a toothed powerapplying member in operative engagement with said toothed rod and longitudinally movable with respect to the same, a plurality of toggle links connected at a common point and operatively connected to said power member; one of said links being connected to the power-applying member, a second having connection with actuating means therefor and a third pivotally anchored to the skeleton frame support, a trigger pivotally mounted in said frame support for operating said toggle links, and a spring-actuated detent engaging said toothed rod and disposed in advance of the power-applying member.

4. The combination with a skeleton frame support, of a toothed rod supported by said frame and longitudinally movable therein, a toothed power-applying member in operative engagement with said toothed rod and longitudinally movable with respect to the same, a series of toggle links connected at a common point; one of said links being connected to the power-applying member, a second having connection with actuating means therefor and a third pivotally anchored to the skeleton frame support, a pistol grip carried by said frame, a trigger for operating said toggle links pivotally mounted in the frame support and disposed adjacent said pistol grip, a spring-actuated detent engaging said toothed rod and disposed in advance of the power-applying member, and means for imparting vertical movement to said detent to release it from engagement with the toothed rod.

5. The combination with a supporting frame, a toothed rod longitudinally movable in said frame and means longitudinally movable into engagement with said rod and in substantial parallelism therewith to actuate the same, of a toothed detent engaging said toothed rod ahead of its moving means, a spring for holding said detent in engagement with said rod, a vertically -movable support for said detent disposed within the frame, and a lever for lifting said detent support to free the detent from the toothed rod and simultaneously raise the rod moving means.

6. The combination with a skeleton frame support, a toothed rod longitudinally movable in said skeleton frame support and means longitudinally movable into engagement with said rod and in substantial parallelism therewith to actuate the same, of a toothed detent engaging said toothed rod, spring means for holding said detent and rod-moving means in operative engagement with the toothed rod, a vertically movable support for said detent .disposed-.Withimthe framefandfaglever for lifting said :detentsupport to free .the 1rodmoving means and subsequently raise :the l detent from ythe ytoothed rod.

'7. The combination-With1ao-skeleton 'frame support `including a .pistol grip, of .a etoothed .rod mounted .forlongitudinal .movement ini said; skeleton frame support, a Atoothed .power-applying member vin engagement with said toothed rod, a Yseries .of toggle links; :one-Uf said links lbeing pivotallyeonnected to said power-applying member and another 'of ,said links fbeing pivotally connected to the frame, fa :trigger 'pivotally mounted in the iframe andpivotally oonnectedto a lthird toggle link; said trigger being movable with respect to the pistol grip :to effect movement of the power-applying member through Ythe medium ofthe toggle links whiohihave a common pivotal connection, and :means Afor lifting the power-*applying .member Lfrom engagement with the toothed rod.

S8. The combination1With askeleton frame sup- .port including .a pistol grip, of a .toothed rod mountedforilongitudinal movement in said skeleton iframe support, a .toothed power-applying member in engagement with said toothed rod, a series of toggle links; one of said links `being pivotallyconnected to said power-applying memberand another of said links being pivotally connected to the frame, a trigger pivotally Amounted in the frame and pivotally connected Ato athird toggle link; said `trigger beinglmovable with respect tothe-pistol grip handle to effect movement of the power-.applying :member through the medium of the toggle links which have acommon pivotal connection, a toothed detent disposedin advance Aof the power member, spring means for holding said detent in engagement with the toothed zrod, and meansfor consecutively disen-` gaging the power-applying member and the detent Ifrom the ltoothed rod including a ,lever pivotally mounted in the frame support.

FRED B. SEEBERGER. 

